Chemistry - November 2006

NO + NO => N2O2 [fast]
N2O2 + H2 => N2O + H2O [slow]
N2O + H2 => N2 + H2O [fast]
From the mechanism above, a student deduces that the rate law of the reaction is rate = k[NO]^2[H2]. The student concludes that [1] the reaction is third order and [2] the mechanism involves the simultaneous collision of two NO molecules and an H2 molecule. Are the conclusions in [1] and [2] correct?

I thought it was no but i don't think i did it right. I found the equation to be [after intermediates were taken out]: NO + NO + H2 + H2 => H2O + N2 + H2O [and it's already balanced]
i looked back at my notes, but the way my teacher did it was confusing and they were easier ones too.
is there an easier and less confusing way to do reaction mechanisms?

2006-11-13 12:36:28 · 2 answers · asked by sooper mouse! 2

For example, stains on clothing being removed by a detergent, etc.
http://www.weblaundry.com/stainremoval.html

2006-11-13 12:27:23 · 2 answers · asked by xscarredapplex 1

how would you give an example or disription for these words:
1. mixture
2.solution
3. pure substance

2006-11-13 12:26:14 · 2 answers · asked by kogmu 3

2006-11-13 12:25:55 · 3 answers · asked by frickenawesomekoreanandyouknowit 2

Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction.
2 NaN3(s) 2 Na(s) + 3 N2(g)

What mass of NaN3(s) must be reacted in order to inflate an air bag to 74.4 L at STP?
please explain

2006-11-13 12:18:21 · 3 answers · asked by smile 1

A compound contains only nitrogen and hydrogen and is 87.4% nitrogen by mass. A gaseous sample of the compound has a density of 0.977 g/L at 680. torr and 84.1°C. What is the molecular formula of the compound? (Type your answer using the format C4H6 for C4H6.)
please explain

2006-11-13 12:16:13 · 1 answers · asked by smile 1

where I is iodine

explain why or why not

2006-11-13 12:13:40 · 1 answers · asked by pixela007 2

i have seen many chemical questions from many people that look strikingly similar to those asked by Dr. johnson kinda wacky and complex

2006-11-13 12:13:05 · 2 answers · asked by The One 2

2006-11-13 12:06:33 · 2 answers · asked by toesockaholic24@sbcglobal.net 1

2006-11-13 12:06:18 · 3 answers · asked by E Z DUZ IT 1

I am doing a chemistry project on the scavenging of hydrogen sulfide from natural gas. I am mostly going to focus on amine sweetening and possibly the Claus method. I am unsure of exactly how everything works.

2006-11-13 12:05:36 · 1 answers · asked by Anonymous

IS vegetable oil a conductor??????

2006-11-13 12:03:53 · 2 answers · asked by Anonymous

also, how many valence electrons does neon have?

2006-11-13 12:01:31 · 6 answers · asked by Mikey G 1

2006-11-13 12:00:12 · 6 answers · asked by frickenawesomekoreanandyouknowit 2

2006-11-13 11:49:32 · 3 answers · asked by Samantha M 1

2006-11-13 11:36:09 · 3 answers · asked by superstar 2

2KClO3(s) → 2KCl(s) + 3O2(g)

what volume (mL) of O2 is collected over water at 24.0 C by the reaction of 0.251g of KClO3 if the barometric pressure is 721.8 mm Hg.

The vapor pressure of water at 24.0 C is 22.4 mm Hg

2006-11-13 11:32:46 · 1 answers · asked by geebgeebgeeb 1

chemistry class work help.

2006-11-13 11:04:56 · 3 answers · asked by Anonymous

How many moles of NO are produced from the complete reaction of 4.78 moles of O2?

2006-11-13 11:01:34 · 6 answers · asked by geebgeebgeeb 1

in the reation, zinc...
Loses two electrons and is oxidized, loses two electrons and is reduced, gains two electrons and is oxidized, gains two electrons and is reduced

2006-11-13 11:00:26 · 3 answers · asked by Lexi U 1

2006-11-13 10:55:40 · 4 answers · asked by Anonymous

2006-11-13 10:54:53 · 3 answers · asked by Vernon A 1

basic, acidic, neutral,or caustic

2006-11-13 10:45:22 · 6 answers · asked by Lexi U 1

I want to see how much my candle will burn in the time given.
should i let it burn for : 30min, 1hour, or do you have another time
plz write
It is around( about) 3inches, k.
thanxz

2006-11-13 10:45:13 · 4 answers · asked by lol! It's moi 2

1) Ammonia (NH3) is widely used as a fertilizer
and in many household cleaners.
How much ammonia is produced when
3:76 mol of hydrogen gas react with an ex-
cess of nitrogen gas? Answer in units of mol.

2) The decomposition of potassium chlorate
(KClO3) is used as a source of oxygen in the
laboratory.
How much potassium chlorate is needed to
produce 15 mol of oxygen? Answer in units of
mol.

3) The elements lithium and oxygen react explo-
sively to from lithium oxide (Li2O).
How much lithium oxide will form if 1:5 mol
of lithium react? Answer in units of mol.

4) The disinfectant hydrogen peroxide (H2O2)
decomposes to form water and oxygen gas.
How much O2 will result from the decom-
position of 2:89 mol of hydrogen peroxide?
Answer in units of mol.

5) Acetylene gas (C2H2) is produced as a result
of the reaction
CaC2(s) + 2H2O(`) !
C2H2(g) + Ca(OH)2(aq) :
If 15 g of CaC2 are consumed in this reac-
tion, how much H2O is needed? Answer in
units of mol.

2006-11-13 10:42:38 · 3 answers · asked by sarahmadison87 1

Zirconium and hafium occur together in nature. It is very difficult to obtain the pure elements. Can anybody explain to me why? I didn't understand my teacher and he used the example above.

2006-11-13 10:36:18 · 2 answers · asked by God 1

2006-11-13 10:36:03 · 4 answers · asked by dre 3

1. Na

2. Na+

3. O

4. O^2^-

5. Co^2^+

2006-11-13 10:24:09 · 1 answers · asked by Lightning 1

1) C6H6 + O2 --->

2) C12H22O11 + O2 --->

3) CH3 COCH3 + O2 --->

4) C2H5OC2H5 + O2 --->

5) C4H9OH + O2 --->

2006-11-13 10:16:56 · 5 answers · asked by evil_elmo 3

When a question uses charles law, and wants you to find the temperature, but asks for it in Celsius temperature,
((it gives the volume in liters and one temperature in celsius))
Do I convert the temperature to Kelvin to do the calculations and then subtract 273.15 to get Celsius, or do I just use the temperature it gives in Celsius to do the calculations? Because i tried it both ways and got a different answer.
Here is the question:
Use charles law to find T1:
V1= 146 L V2= 89 L T2= 132degrees C
answer in units of degrees C.
Charle's law is V1T2=V2T1
I converted T2 to K (405) and then i just subtracted 273.15 at the end to get the temperature of 391.232 C
If i do it with Celsius from the beginning, i get 216.539 C.
Which is correct?

2006-11-13 09:27:20 · 3 answers · asked by Anonymous